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Texas Gov. Rick Perry speaks during the RedState Gathering, a meeting of conservative activists, in Charleston, S.C., Saturday, Aug. 13, 2011, where he announced he was joining the 2012 presidential race. (AP Photo/Gerry Broome)

Texas Gov. Rick Perry speaks during the RedState Gathering, a meeting of conservative activists, in Charleston, S.C., Saturday, Aug. 13, 2011, where he announced he was joining the 2012 presidential race. (AP Photo/Gerry Broome)